is one piece episode 674 filler?

At the underground trade port, Robin used her Devil Fruit powers in an attempt to knock out Sugar with the spice the dwarves were going to use. Unfortunately, she let her guard down for a moment and Sugar touched one of her arms, transforming her into a toy.

While wandering in the trade port, Robin wondered where Usopp went and put her hopes in him as well. At the toy house, Franky decided to remain at the toy house to battle the Marines, because going to the underground world with them after him would jeopardize Thunder Soldier's plans.

He also placed his faith in Usopp.